Words similar to insurmountable

Example sentences for: insurmountable

How can you use “insurmountable” in a sentence? Here are some example sentences to help you improve your vocabulary:

I remember these moments, as I'm sure you do, and I also recall many other moving performances when our athletes reached deep within themselves to overcome what appeared to be insurmountable odds.
The relationship between al Qaeda and Iran demonstrated that Sunni-Shia divisions did not necessarily pose an insurmountable barrier to cooperation in terrorist operations.
Thomas Jefferson, a pessimist, maintained that blacks and whites "can never live in a state of equal freedom under the same Government, so insurmountable are the barriers which nature, habit, and opinion have established between them."
Lastly, proven vaccine approaches from the past have either failed (whole killed virus and subunit vaccines) or faced seemingly insurmountable regulatory hurdles (live attenuated virus vaccine).
Error is not necessarily an insurmountable problem so long as it is randomly distributed across muscle slide preparations.